Gaya APA
GRIMNAMU, ., Novianti, E, N.
(2014).
Why? People : Stephen Hawking
.
Jakarta:
PT Elex Media Komputindo.
Gaya MLA
GRIMNAMU, ., Novianti, Endah, Nawang.
"Why? People : Stephen Hawking".
Jakarta:
PT Elex Media Komputindo,
2014.
Text.